/usr/lib/python3/dist-packages/pint/testsuite/test_pitheorem.py is in python3-pint 0.8.1-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | # -*- coding: utf-8 -*-
from __future__ import division, unicode_literals, print_function, absolute_import
import itertools
from pint import pi_theorem
from pint.testsuite import QuantityTestCase
class TestPiTheorem(QuantityTestCase):
FORCE_NDARRAY = False
def test_simple(self):
# simple movement
with self.capture_log() as buffer:
self.assertEqual(pi_theorem({'V': 'm/s', 'T': 's', 'L': 'm'}),
[{'V': 1, 'T': 1, 'L': -1}])
# pendulum
self.assertEqual(pi_theorem({'T': 's', 'M': 'grams', 'L': 'm', 'g': 'm/s**2'}),
[{'g': 1, 'T': 2, 'L': -1}])
self.assertEqual(len(buffer), 7)
def test_inputs(self):
V = 'km/hour'
T = 'ms'
L = 'cm'
f1 = lambda x: x
f2 = lambda x: self.Q_(1, x)
f3 = lambda x: self.Q_(1, x).units
f4 = lambda x: self.Q_(1, x).dimensionality
fs = f1, f2, f3, f4
for fv, ft, fl in itertools.product(fs, fs, fs):
qv = fv(V)
qt = ft(T)
ql = ft(L)
self.assertEqual(self.ureg.pi_theorem({'V': qv, 'T': qt, 'L': ql}),
[{'V': 1.0, 'T': 1.0, 'L': -1.0}])
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